title: Outbreaks of Escherichia coli O157 infections at multiple county agricultural fairs: a hazard of mixing cattle, concession stands and children.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000383:Agriculture; D000818:Animals; D016022:Case-Control Studies; D002417:Cattle; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D016021:Epidemiologic Studies; D004927:Escherichia coli Infections / Q000453:epidemiology* / Q000635:transmission*; D019453:Escherichia coli O157 / Q000472:pathogenicity*; D005260:Female; D005506:Food Contamination; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D008875:Middle Aged; D009820:Ohio / Q000453:epidemiology; D011159:Population Surveillance; D011998:Recreation; D012307:Risk Factors; D012621:Seasons; D014881:Water Supply